Factor 20y2 + 40y + 20.

A) (2y + 4) (10y + 5)

B) (4y + 4) (5y + 5)

C) (5y + 4) (4y + 5)

D) (10y + 4) (2y + 5)

Fill in the blank. 100-10-30-10-_-30=20

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